两种有机黏土与PA6复合纳米纤维的结构与热稳定性的比较  

Comparison between structures and thermal stability properties of electrospun polyamide6 composite nanofibers with two different organoclays

作　　者：徐筱琳[1] 廖师琴[1] 蔡以兵[1] 魏取福[1] 王清清[1] 徐阳[1] 

机构地区：[1]江南大学生态纺织教育部重点实验室,无锡214122

出　　处：《化工新型材料》2012年第10期59-61,共3页New Chemical Materials

基　　金：国家自然科学基金(51006046);江苏省自然科学基金(BK2010140);高等学校博士学科点专项科研基金(200802951011);江苏省研究生培养创新工程(CXLX11_0500)

摘　　要：通过简单的溶液混合及静电纺丝的方法制备了含有两种不同有机黏土的聚酰胺6(PA6)复合纳米纤维。首先将有机黏土分散在N,N-二甲基甲酰胺(DMF)中,PA6溶解于甲酸中,然后将两种溶液进行充分混合后制得静电纺丝液,最后通过静电纺丝来制备PA6复合纳米纤维。通过XRD、XPS、SEM和TGA分别对纯PA6纳米纤维和两种复合纳米纤维的结构、形貌和热稳定性进行表征与比较。XRD和XPS的研究结果表明,黏土层在复合纳米纤维中分散均匀。TGA的分析表明,由于有机黏土的隔热作用,PA6复合纳米纤维在700℃时的热稳定性和残余量都比PA6纳米纤维的高。并且,硅酸盐晶格上铁离子的作用使得PA/Fe-OMT复合纳米纤维的残余量也明显高于PA/Na-OMT复合纳米纤维。The PA6 composite nanofibers with two different organoclays were prepared by facile compounding and electrospinning. The organoclay was first dispersed in N, N-dimethyl formamide and then compounded with PA6 which was dissolved in formic acid. The composite solutions were electrospun to form PA6 composite nanofibers. The structure,mor- phology and thermal stability properties of the two composite nanofibers were characterized by XRD, XPS, SEM and TGA, respectively, and compared with pure PA6 nanofiber. The XRD and XPS results showed that the clay layers were well dis- persed within the composite nanofihers. The SEM images indicated that the loading of clay decreased the diameters of com- posite nanofibers. TGA analyses revealed that the thermal stability and charred residue at 700~C of PA6 composite nanofi- hers were higher than those of PA6 nanofibers, due to the barrier effects of organoclay. It can be also found that the charred residue of PA/Fe-OMT composite nanofiber was remarkably higher than that of PA/Na-OMT composite nanofiber, attribu- ted to the catalysis effects of Fe ion in the crystal lattice of silicate clay.

关 键 词：PA6 有机黏土 复合纳米纤维 结构 形貌 热稳定性 

分 类 号：TB383.1[一般工业技术—材料科学与工程]